/*!	 valuenode_vectorangle.cpp
**	 Implementation of the "Vector Angle" valuenode conversion.
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**	Copyright (c) 2007, 2008 Chris Moore
**  Copyright (c) 2011 Carlos López
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifdef USING_PCH
#	include "pch.h"
#else
#ifdef HAVE_CONFIG_H
#	include <config.h>
#endif

#include "valuenode_vectorangle.h"
#include "valuenode_const.h"
#include <synfig/general.h>
#include <synfig/localization.h>
#include <synfig/valuenode_registry.h>

#endif

using namespace std;
using namespace etl;
using namespace synfig;

REGISTER_VALUENODE(ValueNode_VectorAngle, RELEASE_VERSION_0_61_09, "vectorangle", "Vector Angle")

ValueNode_VectorAngle::ValueNode_VectorAngle(const ValueBase &value):
    LinkableValueNode(value.get_type())
{
    Vocab ret(get_children_vocab());
    set_children_vocab(ret);

    if (value.get_type() == type_angle)
        set_link("vector", ValueNode_Const::create(Vector(Angle::cos(value.get(Angle())).get(),
                 Angle::sin(value.get(Angle())).get())));
    else {
        throw Exception::BadType(value.get_type().description.local_name);
    }
}

LinkableValueNode*
ValueNode_VectorAngle::create_new()const
{
    return new ValueNode_VectorAngle(get_type());
}

ValueNode_VectorAngle*
ValueNode_VectorAngle::create(const ValueBase &x)
{
    return new ValueNode_VectorAngle(x);
}

ValueNode_VectorAngle::~ValueNode_VectorAngle()
{
    unlink_all();
}

ValueBase
ValueNode_VectorAngle::operator()(Time t)const
{
    if (getenv("SYNFIG_DEBUG_VALUENODE_OPERATORS")) {
        printf("%s:%d operator()\n", __FILE__, __LINE__);
    }

    return (*vector_)(t).get(Vector()).angle();
}

bool
ValueNode_VectorAngle::set_link_vfunc(int i, ValueNode::Handle value)
{
    assert(i >= 0 && i < link_count());

    switch (i) {
    case 0:
        CHECK_TYPE_AND_SET_VALUE(vector_, type_vector);
    }

    return false;
}

ValueNode::LooseHandle
ValueNode_VectorAngle::get_link_vfunc(int i)const
{
    assert(i >= 0 && i < link_count());

    if (i == 0) {
        return vector_;
    }

    return 0;
}

bool
ValueNode_VectorAngle::check_type(Type &type)
{
    return type == type_angle;
}

LinkableValueNode::Vocab
ValueNode_VectorAngle::get_children_vocab_vfunc()const
{
    if (children_vocab.size()) {
        return children_vocab;
    }

    LinkableValueNode::Vocab ret;

    ret.push_back(ParamDesc(ValueBase(), "vector")
                  .set_local_name(_("Vector"))
                  .set_description(_("The vector where the angle is calculated from"))
                 );

    return ret;
}